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The fissile isotope uranium-235 fuels most nuclear reactors.When 235 U absorbs a thermal neutron, one of two processes can occur.About 85.5% of the time, it will fission; about 14.5% of the time, it will not fission, instead emitting gamma radiation and yielding 236 U. [1] [2] Thus, the yield of 236 U per 235 U+n reaction is about 14.5%, and the yield of fission products is about 85.5%.
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1. Cameco Corp. (CCJ) Cameco Corp. is a Canadian company that has by far the largest market cap of any uranium company. The company can produce more than 30 million pounds of uranium concentrates ...
(Reuters) -Uranium prices gained on Friday after Russia imposed temporary restrictions on the export of enriched uranium to the United States. The move by Russia, the world's largest supplier of ...
The spot price for uranium fell, [7]: 195 leaving the price below $10 per pound for yellowcake by year-end 1989. [10] With the price of uranium low, investment in uranium mining decreased. [7]: 195 The uranium market was a buyers market over the periods 1980 to 1994 and 1998 to 2003. [7]: 195
Uranium-236 occurs in spent nuclear fuel when neutron capture on 235 U does not induce fission, or as a decay product of plutonium-240. Uranium-236 is not fertile, as three more neutron captures are required to produce fissile 239 Pu, and is not itself fissile; as such, it is considered long-lived radioactive waste. [115]
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96% of the mass is the remaining uranium: most of the original 238 U and a little 235 U. Usually 235 U would be less than 0.8% of the mass along with 0.4% 236 U. Reprocessed uranium will contain 236 U , which is not found in nature; this is one isotope that can be used as a fingerprint for spent reactor fuel.